The Semantics of English Negative Prefixes outlines a model which unifies the principles of two popular approaches to language description. Cognitive Semantics is the theory that takes account of mental operations. Usage-based Semantics is the practice that focuses on actual utterances. Accordingly, it is an essential source for any reader interested in English language. It achieves its aims by means of clear layout, actual data, ample exemplification, lucid explanation and discrete evidence.